#pass 占位符 什么都不做
a = 3
b = 2
if a>b:
    pass


#break： 用来终止当前循环
# for i in range(4):
#     for j in range(3):
#         print(i,j)
#         if j>=i:
#             print("退出了")
#             break

#continue
#退出本次循环，开始下一次循环
for i in range(5):
    if i == 2:
        continue
    print(f"i is {i}")